Try the drivers from nvidia.com
Hey guys, I have a 4 year old D820, which has been working like a charm. My specs are Intel Core 2 Duo T7200@2GHz 2GHz, 4GB ram, Nvidia Quadro NVS 120, GeForce Go 7400, Bios v. 220.127.116.11.fe, 527 MB available graphics memory, 256 ded video memory.
I recently wiped my system cleaned and booted up with Windows 7 64 bit. Right away, the graphics looked terrible...like old 256 colors. Screen size resolution is correct, but the colors looked terrible. So, I went to dell.com and downloaded the recommended Vista 64 bit driver for my laptop series and even updated that. That only fixed the problem somewhat. My screen looks perfect, expect when I seem to run into something graphics intensive. When I boot up, the windows logo looks terrible...then after about 10 seconds, it clears up to how it should look. Then, my screen will remain fine for MS word, excel, browsing the net, but if I run into any video (youtube) or 3D graphics (nVidia control panel) the color resolution will get terrible again for about 30 seconds and then adjust itself. Every time I open a new video, etc, this happens, and I don't know what to do. I checked my LCD by doing a startup test (it's fine), and I don't think my graphics card is going bad...I was pushing COD4 just fine under Vista 32bit factory config before I uploaded windows 7 64 bit. Any advice?